摘要
在非均匀复合吸声结构研究的基础上,应用分层分析方法,研究了非均匀波导的吸声性能.结果表明,对非均匀层进行分层后,结构在低频时的吸声性能有所提高.因此改变非均匀层的波导长度,对结构吸声性能的优化设计具有实际意义.如果第1层波导长度大于后几层,则结构在低频时的吸声性能可获得明显改善.
Based on the previous study of non-homogeneous compound structures and adopted the method of delamination, the sound absorption performance of non-homogenous compound structures are studied. When the non-homogenous layer is divided, the sound absorption performance of the structures is increased in low frequency. The optimization of sound absorption performance of non- homogenous compound structures are carried out by changing the length of non-homogenous. When the length of first wave-guide layer is larger than that of the other wave-guide layer, the sound absorption performance of the structures is increased in low frequency.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第1期54-57,共4页
Journal of Shaanxi Normal University：Natural Science Edition
基金
全国优秀博士论文基金资助项目(20049)
关键词
波导
吸声
非均匀层
复合结构
wave-guide
sound absorption
non-homogenous layer
compound structure
